Where can I find more documentation about lxml?
There is a lot of documentation on the web and also in the Python standard library documentation, as lxml implements the well-known ElementTree API and tries to follow its documentation as closely as possible. There are a couple of issues where lxml cannot keep up compatibility. They are described in the compatibility documentation. The lxml specific extensions to the API are described by individual files in the doc directory of the source distribution and on the web page. The generated API documentation is a comprehensive API reference for the lxml package.